List divider and Zebra Stripes

* The border that separated the list-containter and the
archived-list-container looked a bit strange in the edge
after the latest changes. I changed it to a separate element
that solves it and makes it look a little bit better than the
original one.
* Removed the gradient that was there from JqueryUI and added
zebra stripes to the list items.
Changed width to look better
and changed a method name.
Updated version to 1.2.1
Merge pull request #117 from fredrikpersson/master

Updated version number to 1.2.1
Updated from comments

New color on archived items
Updating stripes when archiveing
Zebra stripes on children

Added this.
Updated after last comment
Merge pull request #115 from nilsi/gradient_fix

List divider and Zebra Stripes
Merge remote-tracking branch 'upstream/master' into data-push

Conflicts:
	src/main/webapp/resources/js/scripts.js